diff --git a/block.c b/block.c
index 6268e37..1f90b47 100644
--- a/block.c
+++ b/block.c
@@ -1907,6 +1907,12 @@
     if (bs->job) {
         block_job_cancel_sync(bs->job);
     }
+
+    /* Disable I/O limits and drain all pending throttled requests */
+    if (bs->io_limits_enabled) {
+        bdrv_io_limits_disable(bs);
+    }
+
     bdrv_drain(bs); /* complete I/O */
     bdrv_flush(bs);
     bdrv_drain(bs); /* in case flush left pending I/O */
@@ -1958,11 +1964,6 @@
         blk_dev_change_media_cb(bs->blk, false);
     }
 
-    /*throttling disk I/O limits*/
-    if (bs->io_limits_enabled) {
-        bdrv_io_limits_disable(bs);
-    }
-
     QLIST_FOREACH_SAFE(ban, &bs->aio_notifiers, list, ban_next) {
         g_free(ban);
     }
diff --git a/block/raw-posix.c b/block/raw-posix.c
index 30df8ad..86f8562 100644
--- a/block/raw-posix.c
+++ b/block/raw-posix.c
@@ -1648,7 +1648,7 @@
         goto out;
     }
 
-    fd = qemu_open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY,
+    fd = qemu_open(filename, O_RDWR | O_CREAT | O_TRUNC | O_BINARY,
                    0644);
     if (fd < 0) {
         result = -errno;
diff --git a/block/raw-win32.c b/block/raw-win32.c
index 68f2338..b562c94 100644
--- a/block/raw-win32.c
+++ b/block/raw-win32.c
@@ -119,9 +119,9 @@
     case QEMU_AIO_WRITE:
         count = handle_aiocb_rw(aiocb);
         if (count == aiocb->aio_nbytes) {
-            count = 0;
+            ret = 0;
         } else {
-            count = -EINVAL;
+            ret = -EINVAL;
         }
         break;
     case QEMU_AIO_FLUSH:
diff --git a/tests/qemu-iotests/049.out b/tests/qemu-iotests/049.out
index 0425ae0..a2b6703 100644
--- a/tests/qemu-iotests/049.out
+++ b/tests/qemu-iotests/049.out
@@ -118,6 +118,7 @@
 
 qemu-img create -f qcow2 -o size=foobar TEST_DIR/t.qcow2
 qemu-img: Parameter 'size' expects a size
+You may use k, M, G or T suffixes for kilobytes, megabytes, gigabytes and terabytes.
 qemu-img: TEST_DIR/t.qcow2: Invalid options for file format 'qcow2'
 
 == Check correct interpretation of suffixes for cluster size ==
diff --git a/tests/qemu-iotests/128 b/tests/qemu-iotests/128
index e2a0f2f..3d8107d 100755
--- a/tests/qemu-iotests/128
+++ b/tests/qemu-iotests/128
@@ -31,6 +31,11 @@
 devname="eiodev$$"
 sudo=""
 
+_sudo_qemu_io_wrapper()
+{
+    (exec $sudo "$QEMU_IO_PROG" $QEMU_IO_OPTIONS "$@")
+}
+
 _setup_eiodev()
 {
 	# This test should either be run as root or with passwordless sudo
@@ -76,7 +81,9 @@
 echo
 echo "== reading from error device =="
 # Opening image should succeed but the read operation should fail
-$sudo $QEMU_IO --format "$IMGFMT" --nocache -c "read 0 65536" "$TEST_IMG" | _filter_qemu_io
+_sudo_qemu_io_wrapper --format "$IMGFMT" --nocache \
+                      -c "read 0 65536" "$TEST_IMG" \
+    | _filter_qemu_io
 
 # success, all done
 echo "*** done"